Table of Contents
Introduction............................................................................................................................................................6–7
Phone description .............................................................................................................................................6–7
Energy management..............................................................................................................................................6–9
Battery and charging ........................................................................................................................................6–9
Backup battery................................................................................................................................................ 6–10
Normal and extreme voltages ...................................................................................................................... 6–11
Power key and system power-up................................................................................................................. 6–11
Modes of operation........................................................................................................................................ 6–11
Power distribution......................................................................................................................................... 6–13
Clocking scheme............................................................................................................................................. 6–13
Bluetooth ............................................................................................................................................................. 6–14
FM radio................................................................................................................................................................ 6–15
WLAN .................................................................................................................................................................... 6–16
USB........................................................................................................................................................................ 6–17
CBUS interface...................................................................................................................................................... 6–18
FBUS ...................................................................................................................................................................... 6–18
ECI interface ......................................................................................................................................................... 6–18
Charger interface................................................................................................................................................. 6–18
SIM interface ........................................................................................................................................................ 6–18
µSD card interface ............................................................................................................................................... 6–19
Camera concept ................................................................................................................................................... 6–19
Cameras........................................................................................................................................................... 6–19
Main camera characteristics.......................................................................................................................... 6–19
Secondary camera characteristics ................................................................................................................ 6–20
Camera flash ................................................................................................................................................... 6–21
Hardware accelerator .................................................................................................................................... 6–23
User interface....................................................................................................................................................... 6–24
Display module............................................................................................................................................... 6–24
Keyboard and other keys............................................................................................................................... 6–26
Backlight and illumination............................................................................................................................ 6–28
Display and menu key illumination......................................................................................................... 6–28
ITUT keyboard and side key illumination............................................................................................... 6–29
NaviWheel illumination (power LED) ...................................................................................................... 6–30
Hall sensor....................................................................................................................................................... 6–31
ASICs...................................................................................................................................................................... 6–32
RAPIDO ASIC..................................................................................................................................................... 6–32
EM ASIC N2300 ................................................................................................................................................ 6–32
EM ASIC N2200 ................................................................................................................................................ 6–32
Combo memory ................................................................................................................................................... 6–33
Audio concept...................................................................................................................................................... 6–33
Audio HW architecture................................................................................................................................... 6–33
Internal microphone...................................................................................................................................... 6–34
External microphone...................................................................................................................................... 6–34
Internal earpiece............................................................................................................................................ 6–35
Internal speakers............................................................................................................................................ 6–36
External earpiece............................................................................................................................................ 6–37
Vibra circuitry ................................................................................................................................................. 6–38
AV connector................................................................................................................................................... 6–38
Baseband technical specifications..................................................................................................................... 6–39
External interfaces ......................................................................................................................................... 6–39
RM-179; RM-223
System Module and User Interface
Issue 1 COMPANY CONFIDENTIAL Page 6 –3
Copyright © 2007 Nokia. All rights reserved.
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